The Simpsons Game cheats and cheat codes for Playstation 3

Unlock all Lisa's costumes and trophies:  
Press  Square, Triangle, Square, Square, Square, Triangle, L3 at the main 
menu to unlock Lisa's costumes and trophies for the current game session. 
You will hear Bart to laugh once the code is accepted.

Unlock all Bart's costumes and trophies:  
Press Right, Left, Square, Square, Triangle, R3 at the main menu to unlock 
all Bart's costumes and trophies for the current game session.  
You will hear Bart to laugh once the code is accepted.

Unlock all Marge's costumes and trophies:  
Press Triangle, Square, Triangle, Triangle, Square, R3 at the main menu to 
unlock all Marge's costumes and trophies for the current game session.  
You will hear Bart to laugh once the code is accepted.

Unlock all Homer's costumes and trophies:
Press Left, Right, Triangle, Triangle, Square, L3  at the main menu to 
unlock all Homer's costumes and trophies for the current game session.  
You will hear Bart to laugh once the code is accepted.


Finding Cliches:

Clichés - Location:
1. Double Jump - The Land of Chocolate
2. Wooden Crate - Bartman Begins
3. Pressure Pads - Bartman Begins
4. Temporary Power Up - Around the World in 80 Bites
5. Combo Punch - Around the World in 80 Bites
6. Giant Saw Blades - Lisa the Tree Hugger
7. Explosive Barrel - List the Tree Hugger
8. Invisible Barrier - Mob Rules
9. Cracked Up - Mob Rules
10. Rift Portal - Enter the Cheatrix
11. Switches and Levers - Enter the Cheatrix
12. Collectible Placement - Invasion of the Yokel-Snatchers
13. Obvious Weakness - Shadow of the Colossal Donut
14. Can't Swim - The Day of the Dolphin
15. Chasm Death - Bargain Bin
16. Time Trial - Bargain Bin
17. Lame Tutorials - Game Engine
18. Trampolines - Medal of Homer
19. Escort Mission - Medal of Homer
20. Enemy Spawners - NeverQuest
21. Infinte Ledge Hang - Grand Theft Scratchy
22. Lava - Big Super Happy Fun Fun Game
23. Flying Boat - Big Super Happy Fun Fun Game
24. Elemental Enemies - Big Super Happy Fun Fun Game
25. Key Card - Game Engine
26. Evil Genius - Five Characters in Search of an Author
27. Re-Used Enemies - Game Over
28. AI Running into Walls - Springfield
29. Steep Slope Barrier -  Springfield
30. The Doors - Springfield
31. Collecting Every Cliche